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Ghimeray, Amal Kumar,Lee, Hyun Woo,Lee, Bo-Duk,Sharma, Pankaja,Shim, Ie Sung,Park, Cheol Ho The Plant Resources Society of Korea 2014 한국자원식물학회지 Vol.27 No.3
Loranthus tanakae (Franch. & Sav.) is an endangered species of mistletoe, distributed in Korean peninsula. The objective of our research is to determine the effect of storage duration and conditions [air flow (AF) and air tight (AT)] at different temperatures for survivability and germination of mistletoe seeds, and also to monitor the effect of seed scarification on germination in vitro. The result revealed that the seeds stored in natural conditions (no stratification) showed highest survival rate of 100% and retained up to 93.3% even after two months of storage in natural conditions and showed higher germination percentage (90%) compare to after ripened seeds. However, the seed stored at $0^{\circ}C$ decreased the germination percentage (ranged from 63 to 73%). Therefore, it can be confirmed that mistletoe does not need after ripened treatment to promote germination. Our research also showed that the storage of L. tanaka seeds in freezing temperatures of $-20^{\circ}C$ and in room temperature for long time either in AT or AF conditions caused the loss of survival and germination rate. On the other hand, the chemical scarification (0.01N HCl incubation for 12 hrs. at $38^{\circ}C$) method was proven more effective to enhance germination percentage of L. tanakae. Regarding the temperature regime, $22^{\circ}C$ showed early germination of mistletoe seeds in vitro.
Amal Kumar Ghimeray,Pankaja Sharma,Bimal Ghimire,Kabir Lamsal,Balkrishna Ghimire,조동하 한국식물분류학회 2010 식물 분류학회지 Vol.40 No.1
The Illam district, situated in the extreme North Eastern part (Latitude 26.58N and 87.58E Longitude)of Nepal, is a hot spot for floral diversity. The study of wild edible plants of this region was an attempt to highlight the types of wild flowering plants found there and mode of use by the people of the Illam hills. In this respect, a survey of natural resources of some of the representative regions of the district was undertaken and more than 74 major varieties of plant species were found to be used frequently by the people of the hills. The rich diversity occurring in Dioscoriaceae, Moraceae, Rosaceae, Myrtaceae, Poaceae, Urticaceae and Arecaceae provided the wild angiospermic species commonly used by the people of the hills.
Amal Kumar Ghimeray,조동하,박철호,Pankaja Sharma,Jin Cheng Wu 한국자원식물학회 2009 한국자원식물학회지 Vol.22 No.6
The study of germination and seedling growth characteristics of Neem under different soil and environment conditions was undertaken. The seed germination started 8 days after sowing in commercial bed soil, whereas, delayed germination was observed in sandy-loam (15 days) and sandy (19 days) soil. The highest germination (73.33%) was observed in commercial bed soil in green house, whereas, the lowest germination was observed in sandy soil (16.67%) and sandy-loam soil (8.33%). The seeds in the open field (sandy soil) also showed poor (10%) germination. The mean number of germination seed/day (GD) and seed germination vigor rate (GV) both were highest in the commercial bed soil with 0.733% and 16.67% respectively in the green house, whereas sandy and sandy-loam soil in green house and open field (sandy soil) all showed much lower GD and GV values. The seedling characteristics of nursery revealed that the seedling grown in the growth chamber in commercial bed soil was significantly higher in all the parameters comparing to others grown in green house and open field. The growth was nearly 7 fold in the chamber compared to that of the green house nursery observed in three months old seedlings. Likewise, HPLC analysis revealed that the green house grown seedling contain higher quantity of pigments compare to the chamber grown seedlings. Among the soils used the commercial soil alone or in combination with sandy and sandy-loam soil in the ratio of 2:1:1 respectively with the temperature of 27±2℃ showed better for Neem nursery preparation.
Lee, Hyun Woo,Ghimeray, Amal Kumar,Lee, Bo-Duk,Sharma, Pankaja,Shim, Ie Sung,Park, Cheol Ho The Plant Resources Society of Korea 2014 한국자원식물학회지 Vol.27 No.3
Viscum album var. coloratum (mistletoe) is considered as one of the endangered plant species in Korea. Our objective is to restore its population and multiplication of plant by ex situ method. In this research we explored the maximum germination (in vitro) of freshly harvested and stored seeds of mistletoe collected in different time intervals. Ex vitro germination after artificial inoculation on the branches of Prunus mume in different physiological conditions was also monitored. The research revealed that the lately harvested seeds (Feb. and March 2014) were superior over early harvested seeds (Nov. 2013 and Jan. 2014) of mistletoe due to the higher percentage of germination (above 93%). According to the data, it is also revealed that the survival and germination rate of mistletoe seeds decreased with the increase in storage duration. In ex vitro germination, the fluctuated temperature of a glass house in natural condition enhanced (four fold) the rate of germination on the branches of Prunus mume than the constant temperature condition in the glass house.
Changes in Contents of Ginsenoside Due to Boiling Process of Panax ginseng C.A. Mayer
Sung, In Je,Ghimeray, Amal Kumar,Chang, Kwang Jin,Park, Cheol Ho The Plant Resources Society of Korea 2013 한국자원식물학회지 Vol.26 No.6
The purpose of the study was to determine a method to use fresh white Korean ginseng in the form of higher intake of medicinal components. Decoction was made at $70^{\circ}C$ and $90^{\circ}C$ in different intervals of time. HPLC (DAD) system was employed to monitor the ginsenosides content in the decoctions and the components were identified by comparing the retention time with that of reference compounds. However, decoction made at $70^{\circ}C$ in 72 hrs possessed higher amount of total ginsenosides ($209.6{\mu}g/mL$) content where considerable amount of bioactive ginsenosides like Rg3, Rb2, Rb1 and Rg1 were accumulated. Overall, it can be concluded that the fresh white Korean ginseng decoction made in 72 hrs at $70^{\circ}C$ would be useful for the health and other medicinal approach of ginseng.
Won-Woo Kim,Amal Kumar Ghimeray,Jin Cheng Wu,엄석현,이범구,강위수,조동하 한국식품과학회 2012 Food Science and Biotechnology Vol.21 No.1
This research demonstrated and compared the effects of shade and far infrared drying (FIRD) of gamguk (Chrysanthemum indicum L., CE) flowers extract on total phenolic (TP), total flavonoid (TF) content, anticancer and anti-inflammatory activities. The research data revealed that the TP and TF contents were highest in FIRD treated CE flower extracts. Similarly, the effect of CE on lipopolysaccharide (LPS) induced nitric oxide (NO) production in RAW264.7 cells showed in a dose dependent manner. Further, the CE inhibited the tumor necorsis factor (TNF)-α, cyclooxygenase (COX)-2 expression, and prostaglandis E2 (PGE2) production. The anticancer activity was monitored in A549 lung cancer cell, which showed that FIRD treated CE inhibited cell proliferation significantly (p<0.05) higher in dose and time dependent manner.
Cheng-Wu Jin,Seok-Hyun Eom,Hyoung-Jae Park,Amal Kumar Ghimeray,Chang-Yeon Yu,Dong-Ha Cho 韓國藥用作物學會 2009 한국약용작물학회지 Vol.17 No.1
The results on the useful functional compounds of kenaf (Hibiscus cannabinus L.) leaves cultivated in reclaimed lands and the biological activity effects of extracts were as follows. On 98 days after sowing (DAS) Tainung-2 showed the highest total chlorophyll content (1.68 mg/g), and on 141 DAS Dowling showed higher chlorophyll content (1.50 mg/g) than the other two did. In all cultivars the total chlorophyll content was higher on 141 DAS than on 98 DAS. Total polyphenol and total flavonoid contents were the highest in Tainung-2 (30.50 mg/g and 57.03 mg/g, respectively), and total polyphenol and total flavonoid contents (30.50 mg/g and 57.03 mg/g, respectively) were the highest in 30% ethanol extraction. Ascorbic acid contents were higher on 141 DAS than on 98 DAS in three cultivars. SOD activities of kenaf leaf extract were generally over 90%. DPPH radical scavenging activity of Tainung-2 was higher than others.